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you must remove the front suspention crossmember and suspension.
take off trans. oil pan and you can,t help but see it
Counter clock wise to loosen.
2002 Montana holds 4.25 Litres including the oil filter.
Does not have a belt, timing chain only, no maintenance required. Just keep your oil changed regularly.
you have to remove the front suspension, and the cradle or frame that is bolted and holds the engine in.that is the only way to get to the oil pan.
You can find the oil pressure sensor for your 1999 Pontiac Montana on the front of the engine. The low pressure oil sensor will be just below the left cylinder head.
I have a 2003 Montana and to turn off the Change Oil message I have to press the trip meter button until the percentage displays. When it displays keep the button depressed until it resets to 100%.
4.5 quarts of 5W-30
right next to the oil filter.
5w-30 or 10w-30.
When the change oil indicator lights up.